International Laser Ranging Service

SLR Global Performance Report Card

March 1, 2018 through February 28, 2019

The performance report card is divided into three tables for readability. Table 1 contains performance parameters based on data volume, on-site processing statistics and operational compliance issues. Table 1 L contains information about Lunar Laser Ranging during the past year. Table 2 contains performance parameters based on various Analysis Centers' rapid orbital analysis results.

Below are the detailed descriptions of each column in Table 1 plots of the columns are linked in this description and in Table 1:

• Column 1 is the station location name.
• Column 2 is the monument marker number.
• Column 3 is the LEO pass total during the past 12 months.
• Column 4 is the LAGEOS pass total during the past 12 months.
• Column 5 is the high satellite pass total during the past 12 months.
• Column 6 is the pass total (i.e., all satellites) during the past 12 months.
• Column 7 is the LEO NP total during the past 12 months.
• Column 8 is the LAGEOS NP total during the past 12 months.
• Column 9 is the high satellite NP total during the past 12 months.
• Column 10 is the NP total (i.e., all satellites) during the past 12 months.
• Column 11 is the total tracking minutes (i.e., all satellites) during the past 12 months. This is computed by the summation of the number of normal points multiplied by its bin size in minutes.
• Column 12 is the average single-shot calibration RMS, in millimeters, during the last quarter.
• Column 13 is the average single-shot Starlette RMS, in millimeters, during the last quarter.
• Column 14 is the average single-shot LAGEOS RMS, in millimeters, during the last quarter.

The first entry in each table is for the performance baseline goal. Note: There are no baseline goals for NP data quantities, single shot RMS's.

Additional Notes: Blanks in any columns implies either that there was no data or that there was insufficient data. Only stations that have supplied data within the last year are included in the table. The table is sorted in descending order by total passes.

Table 1

Site Information		Data Volume									Data Quality
Column 1	2	3	4	5	6	7	8	9	10	11	12	13	14
Location	Station Number	LEO pass Tot	LAGEOS pass Tot	High pass Tot	Total passes	LEO NP Total	LAGEOS NP Total	High NP Total	Total NP	Minutes of Data	Cal. RMS	Star RMS	LAG RMS
Baseline		2300	600	3000	3500
Yarragadee	7090	18122	2653	8282	29057	289585	20998	32096	342679	176276	2.7	4.7	5.2
Zimmerwald_532	7810	9040	1208	4649	14897	150889	17537	17311	185737	118152	6.2	8.7	11.5
Changchun	7237	9404	673	4589	14666	113016	5303	16067	134386	54889	4.7	7.8	11.5
Herstmonceux	7840	6602	896	4415	11913	90946	10595	14388	115929	66845	3.5	9.1	12.8
Mount_Stromlo_2	7825	6748	1025	2047	9820	97057	8224	5000283	5105564	74934	3.1	4.9	7.1
Wettzell	8834	5336	759	3709	9804	52028	5232	16383	73643	43722	7.0	8.2	12.1
Matera_MLRO	7941	4812	1418	2490	8720	53386	11071	10830	75287	61868	.9	2.3	2.8
Greenbelt	7105	6381	788	867	8036	119539	7648	3514	130701	67816	2.7	6.9	10.3
Graz	7839	4481	519	2653	7653	83499	3162	12269	98930	46365	2.3	7.4	5.3
Kunming	7819	3411	458	3755	7624	41065	1894	9335	52294	22709	5.3	12.3	11.5
Wettzell_SOSW	7827	3139	504	3528	7171	38403	2298	10248	50949	24222	7.9	11.5	11.4
Potsdam_3	7841	4867	563	1086	6516	72096	4289	4272	80657	40649	1.9	5.7	9.2
Monument_Peak	7110	5184	528	536	6248	88828	3829	1482	94139	46732	5.0	7.8	10.2
Hartebeesthoek_HARL	7501	3763	787	1015	5565	51789	5285	5043	62117	39749	6.8	16.1	18.1
Shanghai_2	7821	2424	462	2435	5321	22239	4498	11759	38496	25765	9.2	9.2	8.6
Beijing	7249	1998	269	1422	3689	16361	1804	5396	23561	13476	6.6	11.6	16.5
Arequipa	7403	3373	124		3497	36396	557		36953	20314	6.0	8.2	10.6
Simeiz	1873	2421	267	429	3117	25956	1422	1815	29193	14591	16.7	11.2	14.9
Irkutsk	1891	1486	315	769	2570	12494	2334	1597	16425	12247	39.1	29.0	33.2
Hartebeesthoek_HRTL	7503	1332	288	604	2224	14151	1145	1727	17023	9159	29.5	23.3	27.2
Katzively	1893	2035	150	4	2189	22129	968	15	23112	13391	24.3	8.7	11.3
Haleakala	7119	1772	382		2154	27785	2951		30736	20901	2.5	5.4	6.7
Komsomolsk	1868	77	170	1755	2002	1518	1004	6218	8740	3532			29.4
Papeete	7124	1271	173	451	1895	19164	1423	2334	22921	12501	8.4	9.8	11.4
Badary	1890	1263	256	256	1775	12509	1487	850	14846	11146			27.0
Altay	1879	99	156	1493	1748	1030	777	3550	5357	3100			37.6
Zelenchukskya	1889	946	128	364	1438	7886	860	966	9712	6978		33.4	39.5
Brasilia	7407	314	301	785	1400	1673	962	2069	4704	3661	31.5	22.5	29.0
Arkhyz	1886	468	167	655	1290	3869	849	2177	6895	4770		29.0	33.6
Borowiec	7811	1050	155	83	1288	18274	1689	424	20387	12399	12.9	23.9	18.2
Simosato	7838	989	258	22	1269	14978	3563	145	18686	20749	17.1	15.6	21.5
Riga	1884	1076	107	35	1218	19181	928	161	20270	9165	9.6	9.3
Grasse_MEO	7845	160	255	764	1179	2098	3011	2657	7766	10697	7.3		14.3
Svetloe	1888	824	100	116	1040	5160	346	267	5773	3742		32.5	32.4
Baikonur	1887	4	258	685	947	35	1053	2570	3658	3194			28.2
Kiev	1824	610	44		654	5978	306		6284	3934	13.6	40.6	28.6
Mendeleevo	1874	115	78	284	477	2545	1275	815	4635	4921
Sejong	7394	405	61	9	475	5631	406	54	6091	5151	5.0		15.2
McDonald	7080	71	7	2	80	659	42	4	705	498

 

 

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Below are the detailed descriptions of each column in Table 1 L:

• the first column, L1, is the station location name.
• the second column, L2, is the monument marker number.
• the third column, L3, is the number of nights during the past 12 months in which there were Lunar ranging measurements
• the fourth column, L4, is the number of Lunar Laser Ranging normal points during the past 12 months
• the fifth column, L5, is the number of Lunar Laser Ranging normal points during the past 3 months
• the sixth column, L6, is the average Lunar Laser Ranging normal points rms 3 months in mm

 

Table 1 L

Site Information		Data Information
Column L1	L2	L3	L4	L5	L6
Location	Station Number	num nights tracking last 12 mon	num npt last 12 mon	num npts last 3 mon	ave npt rms last 3 mon
Grasse_MEO	7845	286	1223	325	29.9
Matera_MLRO	7941	36	69	5	54.6

 

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Below are the detailed descriptions of each column in Table 2:

• the first column is the station location name.
• the second column is the monument marker number.
• following columns are in grouped by analysis center with four columns for each
• the first AC column is the average LAGEOS normal point RMS, in millimeters, during the last 3 months
• the second AC column is the measure of short term bias stability, in millimeters, during the last 3 months. The short term stability is computed as the standard deviation about the mean of the pass-by-pass range biases (minimum number of passes in the last 3 months is 10)
• the third AC column is the measure of long term bias stability, in millimeters, during the past year. The long term stability is the standard deviation of the monthly range bias estimates. A station must have tracked LAGEOS (1,2) in at least 8 of the last 12 months in order to compute this metric.
• the fourth AC column is the percentage of LAGEOS normal points that were accepted in the analysis.

The first entry in each table is for the performance baseline goal.

Additional Notes: Blanks in any columns implies either that there was no data or that there was insufficient data. Only stations that have supplied data within the last year are included in the table. The table is sorted in descending order by total data volume.

 

Table 2

Site Information		DGFI Orbital Analysis				Hitotsubashi Univ. Orbital Analysis				JCET Orbital Analysis				MCC Orbital Analysis				SHAO Orbital Analysis
Station Location	Station Number	LAG NP RMS (mm)	short term (mm)	long term (mm)	% good LAG. NP	LAG NP RMS (mm)	short term (mm)	long term (mm)	% good LAG. NP	LAG NP RMS (mm)	short term (mm)	long term (mm)	% good LAG. NP	LAG NP RMS (mm)	short term (mm)	long term (mm)	% good LAG. NP	LAG NP RMS (mm)	short term (mm)	long term (mm)	% good LAG. NP
Baseline		10.0	20.0	10.0	95	10.0	20.0	10.0	95	10.0	20.0	10.0	95	10.0	20.0	10.0	95	10.0	20.0	10.0	95
Yarragadee	7090					1.5	6.1	1.2	100.0	1.9	17.1	1.6	99.7	1.9	17.1	3.1	99.3	1.2	9.7	1.3	95.4
Zimmerwald_532	7810					1.4	6.3	1.3	100.0	1.5	12.0	2.2	98.9	2.7	10.1	2.1	96.9	1.3	8.8	2.2	95.1
Changchun	7237					3.9	19.4	5.6	100.0	2.1	22.3	6.4	92.6	5.3	18.4	8.0	98.7	3.1	15.6	18.1	97.4
Herstmonceux	7840					0.9	6.2	1.1	100.0	1.0	12.1	1.3	99.1	1.6	9.1	3.0	99.9	0.8	6.8	2.3	97.0
Mount_Stromlo_2	7825					2.4	6.5	1.0	100.0	2.0	17.9	2.9	100.0	3.1	14.0	2.4	98.0	1.8	12.0	3.1	95.0
Wettzell	8834					1.8	6.7	2.6	100.0	1.6	12.2	5.7	100.0	2.2	12.9	3.9	99.1	1.1	9.8	3.3	95.3
Matera_MLRO	7941					1.0	6.3	2.3	100.0	1.0	14.2	2.7	100.0	1.6	15.7	2.0	99.8	0.9	16.7	2.5	95.2
Greenbelt	7105					2.2	7.6	2.0	100.0	2.3	15.0	4.2	98.7	2.3	14.4	6.2	98.3	2.1	11.6	2.2	95.2
Graz	7839					2.0	8.1	2.7	100.0	1.8	23.3	3.7	100.0	2.1	8.0	3.9	96.4	1.0	7.9	1.8	96.8
Kunming	7819					4.1	23.9	7.0	100.0	3.0	31.8	10.9	94.9	4.0	22.4	11.0	98.9
Wettzell_SOSW	7827					2.0	9.2	2.6	100.0	1.1	15.0	5.0	98.3	2.1	11.0	4.5	94.8
Potsdam_3	7841					1.7	8.2	3.3	100.0	0.7	15.0	4.6	95.8	1.4	16.2	6.4	98.6	0.5	12.8	4.2	96.0
Monument_Peak	7110					2.1	13.6	3.5	100.0	2.4	19.2	8.3	98.5	3.7	23.8	13.1	98.6	1.6	16.2	7.7	95.7
Hartebeesthoek_HARL	7501					3.1	13.8	3.3	100.0	2.6	21.1	5.6	95.4	3.0	15.6	5.8	98.3	2.1	13.2	5.5	92.8
Shanghai_2	7821					2.7	11.9	4.5	100.0	1.4	12.4	12.1	91.8	2.9	15.8	3.3	94.1
Beijing	7249					10.7	18.4	8.8	100.0	3.8	29.9	13.9	84.9	6.4	27.6	13.4	97.6
Arequipa	7403					7.4	9.6	5.1	100.0	2.9	24.6	11.4	82.4
Simeiz	1873					24.1	35.8	16.2	100.0	4.0	37.4	27.0	56.3	19.6	34.3	21.8	87.6
Irkutsk	1891					7.4	14.7	5.7	100.0	3.6	18.7	6.3	84.9	7.7	14.3	5.9	95.8
Hartebeesthoek_HRTL	7503					4.9	19.8	7.5	100.0	2.8	23.7	7.8	89.2	6.4	18.9	10.3	98.8
Katzively	1893					15.8	23.1	10.6	100.0	3.4	29.1	12.1	69.0	10.0	15.4	9.6	86.4	9.1	20.5	8.0	93.2
Haleakala	7119					2.4	8.4	3.7	100.0	2.8	21.5	4.9	98.1	4.0	22.7	9.0	98.6	1.9	12.1	12.5	91.9
Komsomolsk	1868					4.5	23.4	6.8	100.0					4.9	18.5	12.1	99.5	2.8	12.2	4.6	90.7
Papeete	7124					3.8	21.3	11.3	100.0	3.7	18.9	17.7	95.3	4.7	13.4	13.7	95.8
Badary	1890					4.4	13.0	8.1	100.0	3.1	21.8	10.0	90.2	4.3	14.4	10.8	97.5	3.2	19.2	6.6	96.7
Zelenchukskya	1889					6.5	16.3	5.1	100.0	4.5	27.5	6.4	90.5	5.8	27.3	10.5	97.6	5.3	13.2	7.4	97.2
Brasilia	7407					4.9	21.4	9.7	100.0	3.1	44.1	25.4	89.8	5.0	33.3	16.4	94.1
Arkhyz	1886					10.2	30.2	9.5	100.0	4.1	31.9	13.2	84.1	8.8	28.6	9.1	95.6
Borowiec	7811					3.1	8.3	4.5	100.0									2.9	12.5	7.0	95.3
Simosato	7838					6.2	18.6	17.5	100.0	4.9	16.3	15.2	87.7	11.3	22.3	19.2	100.0
Grasse_MEO	7845					2.4	8.8	8.1	100.0	2.4	14.3	7.6	98.2	2.8	9.6	4.4	98.6	1.8	10.4	13.9	95.9
Svetloe	1888					5.4	11.5	8.0	100.0	2.6	35.4	11.4	89.4